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2011 GMC Sierra Flowmaster Exhaust

Quality craftsmanship, attention to details and superior strength make your 2011 GMC Sierra a cut above other trucks. Provide your pride and joy with even greater capabilities by installing a 2011 GMC Sierra Flowmaster Exhaust System from AutoAnything. It's time to replace your Sierra's restrictive factory system with an enhanced, high-quality, free-flowing exhaust system. Designed to provide your Sierra with additional horsepower and improved fuel economy, Flowmaster Exhaust Systems for your 2011 GMC Sierra feature mandrel-bent tubing made to maximize exhaust flow. By investing in this Flowmaster Exhaust System, you provide your ride with improved MPG, overwhelming horsepower gains and the loudest, most famous exhaust tone in the automotive industry. Save even more when you order from AutoAnything, thanks to our standard, Free Shipping policy and 1-Year, Lower Price Guarantee with every purchase.

dB Performance Exhaust by Corsa Reviews

The sound is incredible on my little 4.8L V8 an I couldn't be happier with the purchase. It has a deep growl on start up and during idle, to me it almost sounds like a diesel without the turbo whine. Very quiet in the cab when cruising and absolutely no drone. When you get on the gas you can really hear it open up. As far as performance, it feels like i had some gains especially coupled with my CAI but its to early to tell if I'm getting any extra MPGs. Can't stop mashing the pedal to the floor!